sampson



Feb. 3,-1931. `N. E.s'.1 \Ml=sorJ 1,790,951

APPARATUS FOR MANUFACTURING RAIL ANqHoRs 'Filed July 25, 1924 7Sheets-Sheet 2 fiufe'no Naf/77.005. Jam/950,7

a? fling/m@ Feb. 3, 193,1. N. E; SAMPSN 1,790,951.

APPARATUS RoR MANUFACTURING RAIL ANcRoRs Filed July 25. 1924 'rsheets-sheet 4 Feb.`3, 1931. N. E. sAMPso'N PFARATUS FOR MANUFACTURINGRAIL ANCHORS Filed J u1y 425, 1924 7 sheets-sheet e' N. sAMPsoN1,790,951

APPARATUS FOR MANUFACTURING RAIL ANGHORS '7 Sheets-Shea*l 7v Feb. 3,1931.

Filed July 25, 1924 each other and together embrace the base of a rail.The member is formed at one end with a jaw 12 adapted to fit over oneedge of the rail base 13 and at the other end with a channel shapedportion, the upstanding flange 15 of which inclines inwardly and isslightly'oblique with respect to (the jaw'12 so as to provide a wedgesurface 16. The

the flanges 15 and 18 will function as wedgeV membersto force the jaws12 and 17 into firm gripping engagement with the rail when the member 11is driven to itsoperative position. rThe flange 18 is inclined from` thevertical to correspond with the inclination of the flange 15 of themember 10 so as to provide an interlocking lengagement which willprevent thechanneled'end 11i of themember 1() from moving downward. riheinember 104 is formed with a downward portion 19 adapted to bear againstthe cross tie 20.

vThe anchor is applied tothe rail 1.8 by hooking the jaws of members 10and 11 over opposite edges of the rail base. The member 11 is then movedlongitudinally of the rail sol as to bring its angularly disposed end 18into interlocking engagement with the flange l5 of the other member. Themember 11 "may then'be ldriven ltoward the tie .2O until the jaws gripthe rail base and a tight fit of the interlocking flanges is effected.

YIn rail anchors of the above` type heretofore made of sheet metal, theinterlocking flanges (corresponding to flanges 15 and 18) have been*formed by bending the edges of the blanks and therefore are confined intheir strength to the thickness vof the blanks from which the elementsare formed. When this type of anchor ismade in my machine,'theinterlocking flanges are formed, as will be hereinafter described, byforging operations soas to displace the metal of the blanks. Thisdisplacement lof metal reinforces the parts of the anchor indicated inFig. 2 by the reference characters A and B, thereby Vmaking itvpractical to use relatively thiny blanks and at the saine time providesufficient strength to avoidy distortion of said flanges when they aredriven into wedging engagement. The displacement of the metal of theblank from Awhich the member 11 is formed, inf addition to strengtheningthe flange 18, provides a flat bearing surface at the end of the memberforv engaging the unis driven toits wedging position.

the member l a forging temperature and the desired length of the blank22 is partly severed from the bar by means of a suitable diesection. Thepartly severed blank is held firmly between said die sections and theend of the blank is upset toy form the flange 18 of the finished member11.' The partly formed blank is `then`positioned between'another set ofdie sections whereinthe blankis severed from thebar and bent around ananvil portion of the die to form the jaw portions 16 of the member.After the blank .is bent to its iinished contour the flange 18 issubjected to pressure lso asto insure that the end 23 thereofbearsfirmly against the 'anvil of the die, y

In`Figs. 5 and 6 I have shown my improved machine for performing thebendingl and forging operations above referred to. The particular formof plungers and die sections shown are intended for use in connectionwith the manufacture of an anchori of the type shown in Figs. 1 to 4inclusive ofthe drawings. The machine illustrated consists of a base 24on which two sets of die -sections 25,

25a, 26, 26a are supported, one above the other.

The die sections 25":L and 26a are secured by suitable clampingmechanism to the base ofl opened and closedsimultaneously by means` of.suitable link mechanism. The link mechanism illustrated preferablyconsists of toggle levers 27a connected to one endiof areciprocatingrod27b.l ,The rod 27? is actuated by means of cam 27 .securedto thepower shaft of the machine. The .die sections are formed with openings,hereinafter specifically described, to receive plunger members adaptedto perform the forging operations. The plungers used in connection withthe manufacture of the anchor member 11 are shown in Fig. 6. Theseplungers are indicated by the reference numerals 28 and 29 and aresecured one above the other toa single cross head 30.l The cross head 30may be operated by means of the eccentric rod 30av or other suitableconnection with the power shaft of the machine. 30b designates the usualtreadle clutch mech anismfor controllingthe operation of the machine.'`y

The several positions of the die sections and plungersI employed inVconnection with the manufacture of member 11 of the anchor areillustrated in Figs.l 7, 8 and 9 of the drawings. yThe manufacture ofthe anchor member 11 is accomplished as follows: The bar 21 when heated,is inserted between the die sections 25, 25a (Fig. 7) and positionedagainst a gauge 31. `The machine is operated to move l flange 18 of theanchor. The gauge 31 may be withdrawn out of the path of the plunger byany suitable mechanism. For convenience of illustration, the gauge isshown as Vformed with a tapered end so that it will bey forced leewithin the recessl 35 of the die section 25a when engaged by the plunger28.

, After the end of the blank is upset, as above described, the partiallyformed blank is positioned between the die sections 26, 26EL (Fig. 8),the shoulder 86 of the blank, formed by the preceding operations, beingheld by the operator against the edge 37 0f the die section 26a andserves as a gauge to insure the'proper positioning of the blank betweenthe said die sections 26, 26a. The machine is then op-v erated to movedie section 26 from the position shown in Fig. 8'to the position of Fig.9. During this movement of the die section the blank is severed from thebar and is bent around the anvil portion 38 of the die section 26 bymeans of projections 39, 40 of the die section 26. The contour of theanvil 38 corresponds to the contour of the rail gripping surfaces ofsaid anchor member. While the anchor member 11 is held on the anvil38,7the plunger 29 enters the recess of die section 26a and strikes theforged end of the anchor member so as to press it firmly against theanvil.

The finished member 11 is then removed from the anvil 38 by means of aknock 0H mechanism, consisting of fingers 41, 42

formed on slide 43, the latter of which has aY lost motion linkconnection with the movable die section 26 so that the fingers will bepressed against the member 11 to remove it from the anvil when the diesection 26 approaches its open position.

Then'manufacturing the member 10 of the anchor, diesections 46, 46a and54, 54a are secured in place in the machine one'above the other. Thesections 54a and 46a are secured to the base of the machine and thesections 54 and 46 are securedto the movable head 27 in substantiallythe same manner as deV scribed in connection with the die sectionsemployed in the manufacture of the member 11. The die sections 54 and54a however are preferably arranged abo-ve the other sections. Theplungers employed in connection with the manufacture of the member 10are secured to the crosshead 30 of the machine, as shown in Fig. 17. Themember 10, instead of being made from a metal strip, as shown inconnection with the-manufacture cf the member 11, is made from a sheetmetal blank 44 of the configuration shown in Fig. 10. The blank 44 isheated so that the end 45 will be at a forging temperature and the restof the blank at a temperature suitable for bending. The blank is thenpositioned between the lower die sections 46, 46a, as shown in Fig. 11,with the portion 47 of the blank engaging av suitablegauge 48. Thesection 46 Vis, then moved toits closed position,thereby forming theblank with bends' 49, 50 and 51,`as shown in Fig. 12. The blank isclamped in this position between the die section and the end 45 of theblank is upset, by means of a plunger 52.' This plunger enters therecess 46h. of the die section 46ar and presses they upset portionagainst an undercut shoulder'53 of the die section 46a to form theupstanding flange 15 of the anchor member 10. VThe blank is thenturnedend for end and placedbetween the upper die sections 54, 542L Vwhereinthe portion 47 of the blank is bent over to form the tie abuttingportion 19 of the anchor and the end 55is bent to form the jaw portion12 of the anchor.V The bend-l ing of the portion 47 of the blank iseffected by means of a slide 56 provided at one end with a roller 57'andactuated by means of an angularly disposed portion 58 of a plunger 59adapted to operate between rollers 60 and 61 on the slide 56. As theportion 47 of the blankis bent down to the desired po sition, as shownin Fig. 16, a lower portion 62 of the plunger, provided with a'roller63, engages the end portion 55'of the blank and bends it around theanvil portion 66 of the die section 54. During these bending'operationsa projection 67 of the die section 54 bears firmly against the forgedend portion 68 of the blank to prevent distortion-of the blank duringthebending operation'above described. f j

lIt will be observed that by securing the plungers 52, 59 and 62-tothecross-head 3() of the machine and by securing the movable die sectionsto a single reciprocating head, a compact machine is provided, in whichwork may be performed simultaneously in both sets of die sections. Thisarrangement provides a compact and practical machin'ein` plunger forupsetting one end of themetal strip and for pressing the upset endthereof against said under-cut shoulder.

NORMAN E. SAMPSON.

